fagforeningstjek.dk

📜 Historical scan 2026-09-23 20:04:05 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

fagforeningstjek.dk is a .dk domain served by 2 nameservers (jay.ns.cloudflare.com, uma.ns.cloudflare.com). It was registered on 10 February 2015 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.61.20 is hosted by Cloudflare, Inc. (AS13335). The zone is DNSSEC-signed and validates, publishes a DMARC policy and is reachable over IPv6. Below are all of its DNS records from this scan: nameservers, A/AAAA, MX, TXT, SPF, DMARC, CAA, TLSA/DANE, MTA-STS, SRV and more.

🖥️ Nameservers#

2 records 39ms

Nameserver	IP addresses	PTR	ASN / ISP
jay.ns.cloudflare.com	108.162.193.123 172.64.33.123 173.245.59.123 2606:4700:58::adf5:3b7b 2803:f800:50::6ca2:c17b 2a06:98c1:50::ac40:217b	jay.ns.cloudflare.com jay.ns.cloudflare.com jay.ns.cloudflare.com jay.ns.cloudflare.com jay.ns.cloudflare.com jay.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
uma.ns.cloudflare.com	108.162.192.146 172.64.32.146 173.245.58.146 2606:4700:50::adf5:3a92 2803:f800:50::6ca2:c092 2a06:98c1:50::ac40:2092	uma.ns.cloudflare.com uma.ns.cloudflare.com uma.ns.cloudflare.com uma.ns.cloudflare.com uma.ns.cloudflare.com uma.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.

🌍 A Records#

2 records 57ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
104.21.61.20	300s	—	AS13335	Cloudflare, Inc.	104.21.0.0/17	—	—
172.67.205.39	300s	—	AS13335	Cloudflare, Inc.	172.67.128.0/17	—	—

📧 MX Records#

📧

No MX records found

🔷 AAAA Records (IPv6)#

2 records 49ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700:3030::ac43:cd27	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—
2606:4700:3031::6815:3d14	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—

🔐 HTTPS Records#

1 records 54ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=104.21.61.20,172.67.205.39 ech=AEX+DQBBdQAgACBTPg8rwe7rLhavdc/3NydO7goOyoEhAF7G1QMqKOZiIgAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3030::ac43:cd27,2606:4700:3031::6815:3d14

📝 TXT Records#

1 records 204ms

TXT Record
v=spf1 -all

✉️ SPF#

Policy	Record (fagforeningstjek.dk)
-all (hard fail)	v=spf1 -all

📨 DMARC#

Policy	Record (_dmarc.fagforeningstjek.dk)
p=reject	v=DMARC1; p=reject; sp=reject; adkim=s; aspf=s;

📬 MTA-STS#

✗ No MTA-STS policy — SMTP TLS not enforced

📈 TLSRPT#

✗ No TLSRPT record — no SMTP TLS failure reporting

📜 CAA Records#

✗ No CAA records — any CA may issue certificates

🧩 Web & zone#

latest probe, not this scan · checked 2026-10-17 16:05:18

www	104.21.61.20 172.67.205.39 2606:4700:3030::ac43:cd27 2606:4700:3031::6815:3d14 (AS13335) (address records, no CNAME)
www vs bare domain	Same network fagforeningstjek.dk: 104.21.61.20 172.67.205.39 2606:4700:3030::ac43:cd27 2606:4700:3031::6815:3d14 (AS13335) www.fagforeningstjek.dk: 104.21.61.20 172.67.205.39 2606:4700:3030::ac43:cd27 2606:4700:3031::6815:3d14 (AS13335)
Wildcard	No
Denial of existence	Compact NSEC (RFC 9824, "black lies") not walkable
CDS / CDNSKEY	Published: key rollovers can be automated with the registry (RFC 7344/8078) 1 CDS, 1 CDNSKEY

🔎 SPF check#

zone-wide SPF report

DNS lookups: 0/10 · policy: -all

No problems found

🔗 TLSA / DANE#

✗ No TLSA records — DANE not configured for HTTPS (_443) or MX (_25)

🔐 DNSSEC#

127ms

Check	Result
Validation Status	🔒 Secure
AD Flag (resolver validates)	✓ Set
DS Record	✓ Found
DNSKEY Record	✓ Found
Flags	fully validated

🏷️ SOA#

0ms

Field	Value
Serial	2415478007
Primary NS (MNAME)	jay.ns.cloudflare.com
Responsible (RNAME)	dns@cloudflare.com
Refresh	10000s
Retry	2400s
Expire	604800s
Minimum (neg-cache TTL)	1800s

📋 Registration#

WHOIS fetched 2026-10-16 16:06:27

Field	Value
Registrar	Simply.com A/S
Registered	2015-02-10
Expires	2027-02-28 (131d)

🔗 Same registrant#

32 domains

Other .dk domains whose WHOIS registrant has the same name and postal address. Matched on a keyed hash: the registrant's details are not stored or shown. Covers only domains whose WHOIS we have fetched (refreshed about monthly).

Domain	Registrar
3-f.dk	Simply.com A/S
3f-a.dk	Simply.com A/S
3f.dk	Simply.com A/S
3fa.dk	Simply.com A/S
3fi.dk	Simply.com A/S
3findustri.dk	Simply.com A/S
3finternational.dk	Simply.com A/S
3frus.dk	Simply.com A/S
3ftransport.dk	CURANET A/S
3ftst.dk	Simply.com A/S
3fudv.dk	Simply.com A/S
3fudvtst.dk	Simply.com A/S
70300300.dk	Simply.com A/S
dagbladet3f.dk	Simply.com A/S
danskemodel.dk	Simply.com A/S
faellesforbundet.dk	Simply.com A/S
fagligtfaellesforbund.dk	Simply.com A/S
fff.dk	Simply.com A/S
fællesskab.dk	Simply.com A/S
landsklubber.dk	Simply.com A/S
langsoehus.dk	Simply.com A/S
lærlinge.dk	Simply.com A/S
nejtilsocialdumping.dk	Simply.com A/S
ok-rent.dk	Simply.com A/S
overenskomster.dk	Simply.com A/S
r-u-s.dk	Simply.com A/S
sammenomok20.dk	Simply.com A/S
tib.dk	Simply.com A/S
trefu.dk	Simply.com A/S
ungi3f.dk	Simply.com A/S
vaerdigreform.dk	Simply.com A/S
værdigreform.dk	Simply.com A/S

📋 WHOIS#

⏱️ Lookup Timing#

39ms

57ms

43ms

AAAA

49ms

TXT

204ms

CAA

57ms

HTTPS

54ms

TLSA

71ms

SOA

0ms

MTA-STS

69ms

DNSSEC

127ms

SRV

89ms

Total

678ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-17 16:05:18	407ms	2 NS 2 A 0 MX	🔒 Secure
2026-10-16 15:53:00	2004ms	2 NS 2 A 0 MX	🔒 Secure
2026-10-06 18:16:22	407ms	2 NS 2 A 0 MX	🔒 Secure
2026-09-29 17:18:07	486ms	2 NS 2 A 0 MX	🔒 Secure
2026-09-24 01:28:49	563ms	2 NS 2 A 0 MX	🔒 Secure
2026-09-23 20:04:05 shown	678ms	2 NS 2 A 0 MX	🔒 Secure
2026-09-09 13:18:55	1090ms	2 NS 2 A 0 MX	🔒 Secure
2026-08-29 13:50:01	949ms	2 NS 2 A 0 MX	🔒 Secure
2026-08-26 20:23:31	628ms	2 NS 2 A 0 MX	🔒 Secure
2026-08-19 11:22:47	1315ms	2 NS 2 A 0 MX	🔒 Secure
2026-08-09 05:49:11	1244ms	2 NS 2 A 0 MX	🔒 Secure
2026-08-06 22:05:52	826ms	2 NS 2 A 0 MX	🔒 Secure
2026-07-12 22:34:30	8552ms	2 NS 2 A 0 MX	🔒 Secure
2026-06-28 13:20:57	921ms	2 NS 2 A 0 MX	🔒 Secure
2026-06-22 21:15:59	810ms	2 NS 2 A 0 MX	🔒 Secure
2026-06-22 02:15:52	1100ms	0 NS 0 A 0 MX	❓ Unknown
2026-06-21 22:20:46	1176ms	0 NS 0 A 0 MX	❓ Unknown
2026-06-20 20:19:15	868ms	2 NS 2 A 0 MX	🔒 Secure
2026-06-17 09:11:53	606ms	2 NS 2 A 0 MX	🔓 Insecure